Japan Firms Look to Save Energy

TOKYO—With Japan's damaged power infrastructure expected to be stretched close to a breaking point as the summer heats up, blue-chip companies such as Sony Corp. and Toshiba Corp. are exploring ways to save energy: They want employees to take multiple weeks off work, and are considering switching work hours to create their own versions of daylight-saving time.

At the same time, the power crunch is boosting interest in new goods that can help cut energy use.